Legal Opinion
Harris v. Ladd
Court of Appeals for the Eighth Circuit
Decided September 9, 1929No. 8436PublishedCited by 11 opinions
1Opinion of the Court
BOOTH, Circuit Judge.
This is a patent suit in the usual form by James B. Ladd against Thomas Harris, involving patent No. 1,625,213, issued to Robert S. Kirkpatrick (assignor to J. B. Ladd), April 19, 1927, application filed October 6, 1922, covering a “caster centering and retaining device.” The defenses were anticipation, lack of patentable novelty, and noninfringement. The court belowi found the patent valid, and that claims 3, 4, and 5 thereof were infringed by defendant’s accused device.
The patent is for a caster including a permanent combination of elements. Claim 3, which may be taken…
2Cases cited3 opinions
- T. I. M. E. Inc. v. United StatesSupreme Court of the United States · 1959
- Richards v. Chase Elevator Co.Supreme Court of the United States · 1895
- Knick v. Bowes" Seal Fast" CorporationCourt of Appeals for the Eighth Circuit · 1928
3Cited by11 opinions
- Schreyer v. Casco Products Corp.District Court, D. Connecticut · 1951
- Aleograph Co. v. Electrical Research Products, Inc.Court of Appeals for the Fifth Circuit · 1932
- Helen Russell Pierce, of the Last Will and Testament of George Washington Pierce, Deceased v. Aeronautical Communications Equipment, Inc.Court of Appeals for the Fifth Circuit · 1958
- American Aerovap, Inc. v. CauthornDistrict Court, N.D. Texas · 1952
- Hansen v. ColliverDistrict Court, N.D. California · 1959
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